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No. 6l3,l22. Patented U01. 25, |898` C. U. DAHLMAN.

PLOW.

(Application led May 27, 1898.)

(N0 Model.)

20 /N VE N 70H NTTED STATES PATENT OFFICE.

CARL O. DAIILMAN, OF CHICAGO, ILLINOIS.

PLOW.

SPECIFICATION forming part of Letters Patent No. 613,122, dated October 25, 1898. .application mea May 2v, 189s. serial No. 681,867. (No modem in its construction a moldboard having an endless belt traveling over the turning-face of such moldboard, which in the forward movement of the plow carries the earth backward, whereby the friction of the earth on the moldboard is decreased and such moldboard constantly kept scoured, suitable guards being also provided for guiding the upper and lower edges of the belt.

This invention has for its purpose to provide certain improvements on and additions to the construction on my patented plow whereby the operation thereof is rendered the more effective and the scouring of the plow made the more complete.

To this end my invention consists in certain novel features of construction and combination of parts, such as will be first described in detail and then be specifically pointed out in the appended claims, reference being had to the accompanying drawings, in which Figure 1 is a perspective View of my improved plow as seen from the moldboard side. Fig. 2 is a side elevation of the same from the landside. Fig. 3 is a cross-section on the line 3 3 of Fig. 1. Fig. 4 is a detail horizontal section taken on the line 4 4 of Fig. 1.

Referring to the accompanying drawings, 1 indicates the plow-beam, 2 the handles, 3 the landside, and 4 the moldboard, 4all of which in their general relation and shape may be of the usual construction. i

In its detail construction the moldboard consists of the bottom or main portion 5, the lower end of which terminates in a seat for the plowpoint 6, which is secured thereto by ber, presently referred to.

the three screws 6", countersunk flush with the front piece. Y

7 indicates a brace which is secured to the said bottom portion 5 and the landside niem- The upper edge of the portion 5 extends upward in a curve toward the beam (which edge is ground to form a cutter 8) and then in a horizontal line backward to merge with the upper edge, which terminates in a flat rim 5a extending from the cutter to the rear edge, the lower edge of the said portion 5 also having a bearing-rim 5b, extending from the rear edge to the point, as indicated in dotted lines in Fig. l.

9 indicates a face-plate which is detachably fitted on the front of the portion 5 of the moldboard by Ia number, preferably six, of countersunk screws 9a, three engaging the top and three engaging the bottom rim. This plate, as also the body portion 5, is curved in a substantially spiral shape to provide for the more eective turning of the earth.

By reference to Fig. 3 it will be observed that the rim edges of the moldboard portion 5 project forward atan angle, whereby to hold the plate 9 sufficiently away to provide space for the free passage of the endless belt l0, which covers substantially the entire face of the plate 9 and is guided at the upper and lower edges by the angle-guards 11 and 12, bolted to the upper and lower edges of the plate 9, the upper one, 11, extending from the cutter to the rear edge, while the lower one, 12, extends from such rear edge to the plow-point.

The plate 9 has its lower end'cut out, as at 9", for the passage of the belt and has the opposite edges, over which the belt passes, terminating in circular bearings 9"',as clearly indicated in Fig. 4.

13 18 indicate a pair or scraper-knives each of which has its front or scraper edge made circular, as at 13a, and the two knives are so disposed that their points terminate in a throat or narrow passage 14, they being secured to the portion 5 of the moldboard by the rearmost screws, which also secure the face-plate and its guides to such portion 5.

The knives are so spaced from the plate 9 as to allow for a free passing of the belt, their edges, however, lying closely against the belt IOG to separate the dirt therefrom when plowing in black or sticky land.

The knives 13 can be readily removed and ground and in plowing dry or free ground may be dispensed with.

By keeping the knives separated the tendency to clogging is avoided, and as the greatest wear on the belt is at the upper part such belt may be thicker at the top than it is at the bottom. y

To keep the belt from runnin gdry and also facilitate its passage over the plate 9, it is greased on its under side as often as may be desired.

So far as described it will be readily seen that by removing the six screws the belt, the knives, and the plate 9 can be detached from the fixed portion 5 of the moldboard, the point being also easily removed therefrom.

In my present form the plow or landside is constructed similar to the moldboard-. e., the same comprises a rear member 15, the landside point piece 16, the plate 17, and guides 18, all of which are connected and arranged similar to the corresponding parts of the moldboard on the landside. But one scraper-knife 19 need be employed to clear the belt 20.

Instead of making the cutter 8 integral with the part 5 the same may be an integral part of the plate 9a, the purpose being to pro- Vide a cutting edge extending above the point 6 sufficient to cut and separate the earth in such a manner as to cause it to ride freely on the belt as the plow is turned forward.

By arranging the belt as described and providing means for clearing it the life of the belt is much extended. Furthermore, the power required to propel the plow is greatly reduced, as the belts take practically all the weight of the earth and the wear from the guards.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The herein-described improvement in plows comprising a fixed member; a detachable face-plate; held spaced apart from the fixed member, the ends of which form beltbearings, and an endless belt movable over the said plate and between it and the fixed member, as specified.

2. A plow as described, comprising a moldboard portion 5, the plow-point detachably held thereon, said portion 5,-having a supplemental cutting edge 8; a removable faceplate 9 5 an endless belt movable over such face-plate and between it and the portion 5, and a scraper detachably secured over the rear end of the belt, as specified.

3. The combination with the moldboard portion 5, and the point detachably secured thereto; of the detachable plate 9, having end bearings, an endless belt passing over the plate 9, and the portion 5, the knives 13 13, the belt-guards and means for detachably connecting the plate and the guards, and the knives, to the portion 5, Aall being arranged substantially as shown and described.

4:. The improvement in plows comprising the moldboard, the point, the endless belt movable upon the face of such moldboard and a supplemental cutter projecting above and adjacent to the upper front edge of such belt whereby to so out and separate the earth as to cause it to ride freely on the belt substantially as set forth.

5. An improvement in plows comprising the main portion or fixed member having outwardly-projected rims at its upper and lower edges, and the face-plate connected with said rims, and the endless belt fitted on said faceplate substantially as set forth.

6. In a plow substantially as described the combination of the face-plate, the endless belt operating thereon and the scraper-knife overlying the said belt at its rear end substantially as set forth.

7. An improvement in plows comprising the endless belt, supporting means therefor, and the scraper-knife overlying the discharge end of the belt and having its edge curved or sloped whereby it operates with a shearing action substantially as set forth.

8. An improvement in plows comprising the endless belt, supporting means therefor, and the upper and lower scraper-knives overlying the opposite edges of the belt at its rear end, the edges of said knife being curved or sloped and converging rearwardly forming a throat substantially as set forth.

CARL O. DAHLMAN.

Vitnesses:

WILLIAM WEIDNER, JAS. W. SoDERsrRUM.

IOO 

